Perforating apparatus



H. A; SILVERMAN. v PERFORMING APPARATUS. APPLICATION FILED JULYIO, I920.

Patented Dec. 27; 1921..

2 SHEETS-SHEET. I

H. A. SILVERMAN.

PERFORATING APPARATUS.

APPLICATION FILED JULYIO, I920.

1,401,822. Patented Dec. 27, 1921.

v '2 SHEETS-SHEET 2.

//V l/E IV TOR 30 the material, and leave the material at the l he r;

I -IARBY A. 'SILVEBMAN, or new YOR n. Y.

PERFORA'IING arrhna rus Application filed July 10,

' To all whom it may concern:

Be it known that I, HARRY SILv RMAN, a citizen of the United States,residing in the borough of Bronx, city and State of New York, haveinvented an Improvement in Perforating Apparatus, of which the followingis a specification. r

This invention relates to a perforating apparatus and more particularlyto that type of perforating apparatus usually employed in puncturingpaper, cloth or other material in making patterns by passing theinstrument over the material and along predetermined lines in which theperforations are made at predetermined intervals by the instrument. Inthis type of apparatus, as heretofore commonly constructed, it has beenusual to employ a perforating wheel having a series of peripheral teethwhich are employed to make the perforations, the wheel being operated invarious manners in the use of the instrument, and in some instancesbeing'heated to burn the perforation in the pattern material. In the useof these instruments, however, due to the revolution of the perforatingwheel, as will be understood, the

teeth or projections in making the perforations enter theperforations atone angle, assume a position at substantially right angles to thematerial while passing through this having the tendency to make a moreor. less irregular perforation. The object of my present invention is toovercome this difficulty and to provide an apparatus in which heperforating'device opposite angle,

is caused to reciprocate rapidly in theuse of the instrument so as toenter and leave the material rapidly soas to make a series of uniformperforations. In carrying out the invention, I also prefer to providemeans for heating the perforating tool in a suitable chamber in which itis removablymounted so that it may be readily exchanged for dif ferentsized perforating devices for effecting perforations of differentdiameters. Fur; thermore, the reciprocating perforating device ispreferably moved by the movement of the apparatus over the material, aswill be hereinafter more particularly described.

In the drawing:

Figure 1 is a central vertical sectlon and partial elevation of theperforating apparatus made in. accordance with my present invention, andV 1 Fig. 2 is a front elevation of the. same.

Specification of Letters Patent.

ournaled I therefor at arms 11. Also mounted on the shaft 22 is arateamanee. 25:, rear. 1920. Serial No. 395,321. 1 I

, ing between and journaled in bearings provided therefor at'the ends ofthe bracket arms 12 there is a shaft 14. On this shaft 141 traction.Wheels, 15 are mounted, the hubs 16 of the traction wheels beingsuitably journaled on the shaft 14'. On one of the traction wheels 15thereis a gear 17. This gear 17 meshes with a pinion 18 secured on ashaft 19 which isjournaled in the frame of the apparatus. Also mountedon the shaft 19 .is a gear wheel 20;. This gear 20' meshes with a pinion21 mounted ona shaft 22'which is in suitable bearings provided theextremities of the bracket ratchet wheel 23 having in the peripherythereof a predetermined number of teeth 24. It will be understood, ofcourse, that while I have shown a single set of gear connections fordriving the traction wheels 15 that both traction wheels maybe madedrive wheels and a double set ofgears employed if the same necessary orappears advisable.

Extending of the bracket arms 12, there is-a bearing 25 and .at theextremity of the support arm 13 there is also a bearing 26. Mounted soas to reciprocate, in these bearings is a heater element 27. The outerwall 28 of the heater element is adapted to fit and. move within thebearing 25 and in predetermined positions is provided with apertures orperforations designated by 29. Inthe upper portion 0 heating elementthereis a. conical wall 30, .and extending from this there is a reducedend or tube 31 f the forming the extremity of the heating element whichfitsjwithin and'is movable in the bearing26. f In the bottom" ratchetwheel. 23 from the from, and connected to the ends of. the heatingelement there is a plug or 010- 7 sure 82, and at a predetermined:distance from'the top vthereof'there is at transverse wall 33. Theheater-element also includes an inner wall 34 whichis preferablyconcentric with the outer wanes and is providedwith perforations 35preferably placedin position 'similar to those inwhich the perforations29fare placed in the outer wall 28, or

otherwise. -The transverse wall 33 is also provided with series of.openings or page "In'aint ained in =a-raised' "position sages indicatedat 36 in order to provide for the escape of unconsumed products ofcombustion to the annular space between the outer and inner walls. Thegas is preferably supplied through the frame and a flexible hose 13leading from the frame to an inlet connection 27 in the lower end of theouter wall of the heater element, although as will be understood, thegas may be supplied by any suitable means, and may be controlled by asupply valve 10. The gas, as will be understood, passes through andburns at the apertures in the inner wall with the flames extendinginwardly so as to heat the perforating iron, as hereinafter described.

One form of perforating iron which maybe employed in this apparatus isindicated at 87. This comprises a bar of any suitable material having amaterially reduced end 88 at one extremity to be employed as theperforating portion of the iron. The body of the iron passes through anopening provlded therefor in the bottom or plug 32 of the heater elementand also at its upper or inner end into an aperture provided therefor inthe transverse wall'33 so as to assume a central position in the heaterelement. The perforating iron is preferably maintained in position inthe heater-element by a latch bar 39 which, as illustrated, is mountedin bearings provided therefor in the outer and inner walls of the heaterelement, and at its inner endis adapted to enter a recess or grooveprovided in the proper position therefor in the perforating iron. Thelatch bar 39 is preferably maintained in its normal position with itsextremity in the recess in the heater element by a spring 42 mounted inthe bearing 40 and extending between the latch bar and the plug/i8 bywhich the hearing at its outer end is closed. The spring 42 alsosurrounds a rod 41 which is secured at one end in the latch bar andpasses through the plug so that the plug maybe withdrawn from its normalposition to release the perforating iron in order that when necessarythe irons may be changed without necessitating the cooling of'the heaterelement which in some instances is a material advantage and in allinstances a saving of much time.

I also employ a tractor bracket 44 which may be connected'to thebearings 25 and 26 or otherwise,.and curved or shaped in any desiredmanner so as toextend immediately below the lowerend of the perforatingiron, at which point the tractor bracketis provided with an aperture 45through which the perforating end of the iro'n'extends' in useyit beingunderstood that this extremity of-the tractor bracket is employedtoenable the user of the. apparatus to follow a predetermined line-markedon. the material'in perforating the 'same 'to form a pattern. The heaterelement furthermore .is normally with the conof the ratchet employing aical portion 30 thereof against the lower ends of the bearing 26 bymeans of a spring 47 which extends between a flange 46 on thereducedextremity of the heater element and the upper end of the bearing26. It will be understood, however, that while I have herein shown anddescribedan apparatus which is designed to be heated by gas, other andequivalent heating means may be employed without departing from thenature and spirit of my invention. i

In the use of the apparatus as .hereinbe fore described, the tractionwheels 15 are moved over the material, after the same is marked withthe, lines defining the pattern to be made, in such a manner that thelower end of the tractor bracket always covers the line in which theperforations are to be made. The turning of the traction wheels impartsa relatively rapid movement to the ratchet wheel 23, as will be readilyunderstood, and this causes a-reciprocation of the heater element byeach tooth of the ratchet wheel, coming into contact with a projection38 on the heater element against the action of the spring 47 sothat aseach tooth of the ratchet comes into contact with the extension 33 onthe heater element the heater element is depressed, causing the end ofthe perforating iron to make a hole in the material on the line definingthe pattern and position, this being done, of course, before the nextsucceeding tooth comes into contact with the projection on the heaterelement' In this manner, as will be understood, the heater element israpidly reciprocated and in each movement thereof causes a perforationto be made in the material for forming the pattern. Of course it will beunderstood that the irons may be exchanged as hereinbefore stated tomake perforations of different diameters or of various configurationsand that the ratchet wheels 23 may also have various numbers of teethand be made interchangeable so that fora given speed in the operation ofthe apparatus the number of reciprocations of the heater element may bevaried to determine the space between each perforation in the lineforming the pattern.

It will also be understood that instead of pair of traction *w heels"and mounting the heater'element 'andits perforating iron between thesame, I may employ a single traction wheel withthe heater elementarranged at the side thereof, as well 7 as other obvious forms of theconstruction wlthout departlng from the nature and spirit of theinvention.

4 I claim as my invention: I

1. A perforating'apparatus comprisin'g a frame, a traction wheel mounted.therei'm'a heater element movably mounted in "the as soon as the toothis free of th'e'projec- 'tlon the spring at? returns the'heater ele mentto its normal frame, a perforating iron in the heater element, and meansactuated from the traction wheel for moving the said heater element andperforating iron in said frame.

2. A perforating apparatus comprising a frame, a traction wheel mountedtherein, a heater element slidably mounted in the said frame, aperforating iron detaohahly connected in the said heater element, andmeans operated from the traction wheel for moving the said heaterelement and iron in the said frame.

3. A perforating apparatus comprising a frame, a traction wheel mountedtherein, a vertically mounted reciprocating heater element in the saidframe, a perforating iron detachably connected in the said heaterelement, means actuated by the said traction wheel for imparting adownward movement to the said heater element and perforating and devicesfor returning and northe said heater element initial position.

iron, mally maintaining and perforating 1ron in an 4;. if perforatingapparatus comprising a frame, a traction wheel mounted therein, a heaterelement mounted toreciprocate vertically in the said frame, aperforating iron, means for detachably connecting the perfoating iron inposition in the heater element,

and means for actuating the heater'element and perforating iron from:the traction wheel.

5. A perforating apparatus comprising a frame, a traction Wheelmountedthereln, a heater element including an outer wall, an

' inner wall placed concentrically with the outer wall providing anintermediate chamher, with the said walls having apertures therein forthe admission of air and gas to be burned interiorly at the apertures inthe inner wall, a perforating iron detachably mounted within the innerwall of the heater element, and means for actuating the aid heaterelement and perforating iron from the said traction wheel.

Signed by me this 8th day of July, 1920.

' HARRY A. SILVERMAN.

